Welcome to the Key Definitions in Complex Problem Solving video lesson meant to introduce the basic concepts involved in complex problem solving. This video lesson is the first of five in the Complex Problem Solving video course, which explains how to critically evaluate and resolve messy organizational problems. In this lesson, learners will consider why there are more complex problems than ever before. In addition, viewers will learn what makes a problem complex, what complex problem solving is, and why complex problem solving is a valuable skill — personally and organizationally.